these cases reactivated by heat and forms a very strong bond between decor material and substrate. Lately, the automotive industry has started to use more and [...] a mixture of natural fibres and polypropylene, abbreviated to NFPP. This material is increasingly used since it offers a number of advantages: By comparison [...] commonly used in vehicle interiors is polypropylene (PP). Components of this material exhibit a very low surface tension and so far represented a real challenge
https://www.jowat.com/pl-PL/szczegoly-newsroomu/techtextil-2013-strong-adhesives-for-lamination-of-nfpp-and-pp-in-car-interiors-reliable-bonding/